Morphological segregation in the Pisces-Perseus supercluster
Morphological segregation in the Pisces-Perseus supercluster
复制标题
双鱼座-英仙座超星系团的形态分离
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
G. Chincarini
中科院分区：
文献类型：
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作者：
R. Giovanelli;M. Haynes;G. Chincarini
在双鱼座-英仙座超星系团所代表的大范围的星系密度中，沿着沿着整个哈勃序列的星系之间的连续形态分离的证据正在寻找。观测数据使我们有可能勾勒出超星系团的总体结构。一阶，星系投影表面密度分布的增强反映了超星系团体积密度的增强。两点自相关函数计算的星系样本的各个子集，它表明，早期类型的星系在双鱼座英仙座地区往往集群在较小的角尺度比后来的类型。此外，椭圆星系和S 0星系的人口分数被发现在整个超星系团的密度增加而增长，而螺旋分数相应地减少。35篇参考文献。
Evidence for continuous morphological segregation among galaxies along the entire Hubble sequence is sought for the wide range of galactic densities represented by the Pisces-Perseus supercluster. Observational data makes it possible to outline the gross structure of the supercluster. To the first order, enhancements in the projected surface density distribution of galaxies reflect volume density enhancements in the supercluster. The two-point autocorrelation function is computed for various subsets of the galaxy sample, and it is shown that early-type galaxies in the Pisces-Perseus region tend to cluster on smaller angular scales than later types. In addition, the population fractions of elliptical and S0 galaxies are found to grow with increasing density throughout the supercluster, while the spiral fraction correspondingly decreases. 35 references.